For 1991 5 Series Sedan Third generation BMW recommends to use: 6PK1555, 4PK778, 5PK1815, 5PK980, and 5PK905. To select the right part or fluid see the table below.
in your garage to make future searches easy.
Condition
Value
expand_moreAuxiliary drive belt size
expand_more520 i with gasoline straight-6 2.0 L 127 HP engine (1988.1–1991.8)
Air-conditioning secondary belt
13 x 800 mm
Main belt
10 x 983 mm
Power steering secondary belt
10 x 825 mm
expand_more524 td with diesel straight-6 2.4 L 114 HP engine (1988.3–1995.9)
Air-conditioning secondary belt
13 x 825 mm
Main belt
10 x 995 mm
Power steering secondary belt
10 x 865 mm
expand_more525 i with gasoline straight-6 2.5 L 168 HP engine (1988.1–1991.8)
expand_moreAir-conditioning secondary belt
Variant 1
13 x 800 mm
Variant 2
13 x 825 mm
Main belt
10 x 983 mm
Power steering secondary belt
10 x 825 mm
expand_more525 iX 24V with gasoline straight-6 2.5 L 189 HP engine (1991.10–1995.9)
expand_moreAir-conditioning secondary belt
Variant 1
5PK980
Variant 2
5PK905
Main belt
6PK1555
expand_more525 tds with diesel straight-6 2.5 L 141 HP engine (1991.9–1995.9)
Air-conditioning secondary belt
4PK778
Main belt
5PK1815
expand_more530 i with gasoline straight-6 3.0 L 185 HP engine (1988.1–1991.8)
Air-conditioning secondary belt
13 x 975 mm
Main belt
13 x 1000 mm
Power steering secondary belt
10 x 825 mm
expand_more535 i with gasoline straight-6 3.4 L 208 HP engine (1988.1–1995.9)
Air-conditioning secondary belt
13 x 835 mm
Main belt
13 x 1055 mm
Power steering secondary belt
10 x 865 mm
Check drive belts regularly on your 5 Series Sedan and replace them if you found any signs of wear or any tears or damages.
Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1991 BMW 5 Series Sedan user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.
Before doing any DIY service please check your insurance policy and BMW warranty policy for your region. In some regions DIY service may invalidate your warranty.
DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow BMW 5 Series Sedan service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.
Doing basic service for your 1991 BMW 5 Series Sedan you're not only saving money, but also also improving your technical skills and learning something new.